The D-Shape is a huge 3D printer that uses sand to build structures.

Enrico Dini, an Italian inventor, has created a huge 3D printer that can print complete buildings out of sand. Named the D-Shape, the printer is controlled by a computer running CAD software and has thousands of nozzles on its underside which emit a layer of sand followed by a layer of magnesium-based binder which turns the sand to solid stone. Dini claims that his printer can construct a building four times faster than by the conventional method and can easily print intricately curved structures which are otherwise difficult to build.

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